These little tips man, they are gold. Years ago I used to do a talk called "Cracking the Shell" that was just a bunch of stuff like this I'd picked up over the years. I know I'm not even scratching the surface. So many little tips and tricks.
If you add this to your bashrc you can use vim key bindings to edit your commands.
set -o vi
Then if you write a command out and then press escape, you can use vim motions to move around and edit your command. Its mentioned in the post but not explained.
ctrl-w
orcrtl-u
before. On mac, I usealt-right/left arrow
rather thanctrl-rl-arrow
to cursor over words.set -o vi